Title:
LIGHT MODULATOR, OPTICAL OBSERVATION DEVICE, AND LIGHT IRRADIATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/111332
Kind Code:
A1
Abstract:
A light modulator that comprises: a perovskite electro-optic crystal that has an input surface into which input light is inputted and a back surface that is opposite the input surface; a first optical element that is arranged on the input surface of the electro-optic crystal and has a first electrode that transmits the input light; a second optical element that is arranged on the back surface of the electro-optic crystal and has a second electrode that transmits the input light; and a drive circuit that applies an electric field between the first electrode and the second electrode. The first electrode is arranged as a single body on the input surface, and the second electrode is arranged as a single body on the back surface. At least one of the first electrode and the second electrode partially covers the input surface or the back surface. The propagation direction of the input light and the application direction of the electric field within the electro-optic crystal are parallel. A charge injection suppression layer that suppresses injection of charge into the electro-optic crystal is formed between the input surface and the first electrode and/or between the back surface and the second electrode.
Inventors:
TAKIZAWA KUNIHARU (JP)
TANAKA HIROSHI (JP)
TOYODA HARUYOSHI (JP)
OHBAYASHI YASUSHI (JP)
SAKAI HIROTO (JP)
WATANABE TSUBASA (JP)
TANAKA HIROSHI (JP)
TOYODA HARUYOSHI (JP)
OHBAYASHI YASUSHI (JP)
SAKAI HIROTO (JP)
WATANABE TSUBASA (JP)
Application Number:
PCT/JP2017/043707
Publication Date:
June 13, 2019
Filing Date:
December 05, 2017
Export Citation:
Assignee:
HAMAMATSU PHOTONICS KK (JP)
International Classes:
G02F1/015
Domestic Patent References:
| WO2004111717A1 | 2004-12-23 |
Foreign References:
| US3938878A | 1976-02-17 | |||
| JP2010026079A | 2010-02-04 | |||
| JP2014092612A | 2014-05-19 | |||
| JP2012159584A | 2012-08-23 | |||
| JP2015158531A | 2015-09-03 | |||
| US20110170160A1 | 2011-07-14 | |||
| JP2003222844A | 2003-08-08 | |||
| JP2002365603A | 2002-12-18 | |||
| JP2015018175A | 2015-01-29 | |||
| JP2013029837A | 2013-02-07 | |||
| JP2006293022A | 2006-10-26 | |||
| JP2014219495A | 2014-11-20 | |||
| JPH01179919A | 1989-07-18 | |||
| JP2010019630A | 2010-01-28 | |||
| JP2011008227A | 2011-01-13 |
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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